{"?xml":{"@version":"1.0"},"edm:RDF":{"@xmlns:dc":"http://purl.org/dc/elements/1.1/","@xmlns:edm":"http://www.europeana.eu/schemas/edm/","@xmlns:wgs84_pos":"http://www.w3.org/2003/01/geo/wgs84_pos","@xmlns:foaf":"http://xmlns.com/foaf/0.1/","@xmlns:rdaGr2":"http://rdvocab.info/ElementsGr2","@xmlns:oai":"http://www.openarchives.org/OAI/2.0/","@xmlns:owl":"http://www.w3.org/2002/07/owl#","@xmlns:rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","@xmlns:ore":"http://www.openarchives.org/ore/terms/","@xmlns:skos":"http://www.w3.org/2004/02/skos/core#","@xmlns:dcterms":"http://purl.org/dc/terms/","edm:WebResource":[{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UT6B5X7S/6d052b45-6739-43ba-9cc6-397a50dfd4cf/HTML","dcterms:extent":"26 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UT6B5X7S/e87cdc69-a8e5-4829-8f8d-921521928155/PDF","dcterms:extent":"277 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UT6B5X7S/e5956219-18e7-4c0e-b6ed-9620a04c32c3/TEXT","dcterms:extent":"26 KB"}],"edm:TimeSpan":{"@rdf:about":"1999-2025","edm:begin":{"@xml:lang":"en","#text":"1999"},"edm:end":{"@xml:lang":"en","#text":"2025"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-UT6B5X7S","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/URN:NBN:SI:spr-6QOUKQ9A"},{"@xml:lang":"sl","#text":"Strojniški vestnik"}],"dcterms:issued":"2000","dc:creator":["Krope, Andrej","Krope, Jurij","Tičar, Igor"],"dc:format":[{"@xml:lang":"sl","#text":"letnik:46"},{"@xml:lang":"sl","#text":"7 strani"},{"@xml:lang":"sl","#text":"številka:8"},{"@xml:lang":"sl","#text":"str. 525-531"}],"dc:identifier":["ISSN:0039-2480","COBISSID:4087835","URN:URN:NBN:SI:doc-UT6B5X7S"],"dc:language":["en","sl"],"dc:publisher":[{"@xml:lang":"sl","#text":"Association of Mechanical Engineers and Technicians of Slovenia et al."},{"@xml:lang":"sl","#text":"Zveza strojnih inženirjev in tehnikov Slovenije et al."}],"dc:subject":[{"@xml:lang":"sl","#text":"cevovodi"},{"@xml:lang":"sl","#text":"dodatki"},{"@xml:lang":"sl","#text":"izgube tlačne"},{"@xml:lang":"sl","#text":"površinsko aktivne snovi"},{"@xml:lang":"sl","#text":"pretok fluida"},{"@xml:lang":"sl","#text":"sistemi toplovodni"},{"@xml:lang":"sl","#text":"tlačne izgube"}],"dcterms:temporal":{"@rdf:resource":"1999-2025"},"dc:title":{"@xml:lang":"sl","#text":"Zmanjšanje tlačnih izgub v vročevodnih cevnih mrežah| The reduction of friction losses in district-heating pipelines|"},"dc:description":[{"@xml:lang":"sl","#text":"In the paper the impact of cationic surfactant additives on reducing the turbulence in the hot-water pipelines of district heating system is presented. With small ammonts of cationic surfactants in district-heating water the friction losses in pipeline can be reduced significantly. Because of this effect the pressure drops are decreased what leads to reductions in pump energy, pumping costs, costs of gas for heating the supply water, heat losses and to an increase in the heat capacity. New district-heating networks can be designed with smaller pipe diameters and so investment costs can be reduced significantly by applying friction-reducing additives"},{"@xml:lang":"sl","#text":"V prispevku je predstavljen vpliv kationskih površinsko aktivnih dodatkov na zmanjšanje intenzivnosti turbulence v ceveh primarnih vročevodnih mrež sistemov za daljinsko ogrevanje. Že zelo majhne količine dodatkov vroči vodi, povzroćijo znatno zmanjšanje odpora pri pretoku po ceveh in zato manjše izgube tlaka, kar vodi do manjše potrebne moči črpalk, znižanja črpalnih stroškov, povečanja zmogljivosti, zmanjšanje stroškov plina za ogrevanje vode in zmanjšanje toplotnih izgub. Pri načrtovanju in izgradnji novih vročevodnih mrež lahko uporabljamo cevi z manjšimi premeri in tako znatno znižamo investicijske stroške"}],"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-UT6B5X7S","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-UT6B5X7S"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-UT6B5X7S/e87cdc69-a8e5-4829-8f8d-921521928155/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Univerza v Ljubljani, Fakulteta za strojništvo"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-UT6B5X7S/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-UT6B5X7S"}}}}